The pop princess shared a behind-the-scenes look on Twitter as she rehearsed the day before launching her highly anticipated Las Vegas residency at Planet Hollywood Resort & Casino.

The 32-year-old singing sensation is solo on stage while rehearsing her show Britney: Piece of Me, striking a sexy pose with a dark purple spotlight. The mother of two is flaunting her enviable abs and ultra-fit body in a formfitting two-piece ensemble and a slick Fedora.

"Can't believe the 1st show is almost here!!! #PieceOfMe," she added with the sultry pic.

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